Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Laser-produced porous structure

a porous structure and laser-produced technology, applied in the field of porous surface or structure, can solve the problem that the field has not focused on reducing the density of three-dimensional structures

Active Publication Date: 2016-10-04
UNIV OF LIVERPOOL +1
View PDF356 Cites 158 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a method for creating structures with regular or irregular unit cells. These cells can have different shapes, such as tetrahedra, dodecahedra, or octahedra. The cells can also be truncated, which eliminates some of the struts that form them. This provides a barbed effect to the finished structure. The patent also mentions that struts can intersect at points and that surface or interior laser beams can be used to adjust the length and cross-section of the struts. Additionally, some of the cells can be deformed and overlapping struts can be used to adjust the porosity of the structure. These techniques enable the creation of complex and custom structures with improved strength and flexibility.

Problems solved by technology

However, while the field of rapid prototyping has focused on increasing density of such three-dimensional structures, the field has not focused its attention on reducing the density of three-dimensional structures.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Laser-produced porous structure
  • Laser-produced porous structure
  • Laser-produced porous structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0074]This invention relates to a method of forming porous and partially porous metallic structures which are particularly but not exclusively applicable for use in hard or soft tissue interlock structures for medical implants and prosthesis. The method makes use of laser technology by employing a variety of scanning strategies. Typical metal and metal alloys employed include stainless steel, cobalt chromium alloys, titanium and its alloys, tantalum and niobium, all of which have been used in medical device applications. This invention can be used for such medical device applications where bone and soft tissue interlock with the component is required, or where a controlled structure is required to more closely match the mechanical properties of the device with surrounding tissue.

[0075]The intention of the present invention is to produce a three-dimensional structure using a laser remelting process, for example, for building structures utilizing unit cells with or without a solid bas...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
poweraaaaaaaaaa
exposure timeaaaaaaaaaa
porosityaaaaaaaaaa
Login to View More

Abstract

The present invention disclosed a method of producing a three-dimensional porous tissue in-growth structure. The method includes the steps of depositing a first layer of metal powder and scanning the first layer of metal powder with a laser beam to form a portion of a plurality of predetermined unit cells. Depositing at least one additional layer of metal powder onto a previous layer and repeating the step of scanning a laser beam for at least one of the additional layers in order to continuing forming the predetermined unit cells. The method further includes continuing the depositing and scanning steps to form a medical implant.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. application Ser. No. 11 / 027,421, filed on Dec. 30, 2004, now abandoned, the disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates to a porous surface or structure and a method for forming the same, which uses a directed energy beam to selectively remelt a powder to produce a part. The energy beam may include a laser beam, and an electron beam or the like. In particular, this invention relates to a computer-aided laser apparatus, which sequentially remelts a plurality of powder layers to form unit cells to build the designed part in a layer-by-layer fashion. The present application is particularly directed toward a method of forming a porous and partially porous metallic structure.[0003]The field of free-form fabrication has seen many important recent advances in the fabrication of articles directly from computer controlled databases...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(United States)
IPC IPC(8): B22F3/11B22F3/105A61L27/56A61L27/04A61F2/30C23C4/02B23K26/40C23C26/02C23C24/10C23C4/18A61F2/44A61F2/38A61F2/36A61F2/28A61F2/34
CPCA61F2/30907A61F2/30771A61F2/30965A61L27/04A61L27/56B22F3/1055B22F3/1109B23K26/382B23K26/40B23K26/402C23C4/02C23C4/18C23C24/10C23C26/02A61F2/2803A61F2/3094A61F2/30767A61F2/36A61F2/3662A61F2/389A61F2/3859A61F2/4455A61F2002/30011A61F2002/3092A61F2002/3097A61F2002/30113A61F2002/30143A61F2002/30146A61F2002/30153A61F2002/30154A61F2002/30199A61F2002/30243A61F2002/30283A61F2002/30329A61F2002/30736A61F2002/30785A61F2002/30789A61F2002/30879A61F2002/30892A61F2002/30904A61F2002/30915A61F2002/30925A61F2002/30952A61F2002/30962A61F2002/30968A61F2002/30971A61F2002/3403A61F2002/3411A61F2002/3417A61F2002/3425A61F2002/3472A61F2002/3474A61F2002/4475A61F2220/0025A61F2230/0006A61F2230/0017A61F2230/0019A61F2230/0021A61F2230/0063A61F2230/0071A61F2250/0023A61F2310/00017A61F2310/00023A61F2310/00029A61F2310/00095A61F2310/00131A61F2310/00401A61F2310/00407A61F2310/00413A61F2310/00491A61F2310/00544B23K2201/35B23K2203/02B23K2203/04B23K2203/08B23K2203/14B23K2203/42B23K2203/50B23K2203/52Y02P10/295B23K2103/18B23K2103/26B23K2103/50B23K2101/35B23K2103/02B23K2103/05B23K2103/08B23K2103/14B23K2103/52B33Y10/00B33Y80/00A61F2240/001A61F2002/3028A61F2002/30593A61F2002/30594A61F2002/305Y02P10/25B22F10/28B22F10/80B22F10/38B22F12/52B22F12/43B22F10/36B22F10/20B23K26/082B23K26/342
Inventor JONES, ERICSUTCLIFFE, CHRISTOPHER J.STAMP, ROBIN
Owner UNIV OF LIVERPOOL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com